Qijiajun does not belong to the central army of the imperial court. Because of Zhang (Qi Jiajun was formed by Zhang), after Zhang's death, this army was a heterogeneous stepmother in the eyes of Ming people. High-level officials intend to get rid of this army and eliminate dissidents by the hands of the Qing army, which is the main reason why Qi Jiajun was defeated and annihilated.
Qi Jiajun is not born with strong fighting capacity. This is made of real gold and silver. According to the establishment of Qigujun, Qi Jiguang set up an army of thirty thousand people in Liaodong. This army had 8,000 guns, 100 cannons, and * * * spent a total of 67 million taels of silver, which was the total financial income of the Ming Dynasty in the four years at that time. Such an army is indeed very effective, worthy of the name of the first army in Asia. However, we can also see the weakness of this army, which is burning money. Apart from spending a lot of money to form this army, it is also very expensive to keep such an army. 90% of the Ming army's military expenditure was spent on Qi Jiajun (which also made other Ming troops jealous and couldn't wait to see Qi Jiajun make a fool of himself and didn't want to rescue him).
After Qi Jiguang's death, Qi Jiajun, a senior official of the Ming Dynasty, cut off the financial allocation to Qi Jiajun, which cut off the logistics of Qi Jiajun, with only guns and no ammunition. As the saying goes, it is better to burn tongs with guns and no ammunition. This kind of firearm is really inferior to swords and halberds without ammunition. It is only a matter of time before being defeated, which is also the main factor that the remaining Qijiajun was defeated in the battle with the Qing army.